Xiaomi Review, Is Xiaomi Non-Toxic?
Across 21 graded products, Xiaomi averages Excellent (85/100). On disclosure, the brand says nothing publicly about PFAS. 21 of its products grade Good or better. Grades are model-based estimates, not lab results.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Does Xiaomi have PFAS, by category
Worth buying from Xiaomi Good or better, best-graded first
Xiaomi
Slim Woven Metal Watch Band for Xiaomi Xiaomi Watch
Woven stainless steel mesh band
Nickel contact sensitization
Stainless steel contains 8-12% nickel; prolonged skin contact may trigger allergic…
Bacterial/microbial growth in mesh weave
The tight woven structure can trap sweat, bacteria, and debris if not cleaned regularly.…
Lower concern. Bare metal mesh unlikely to hold PFAS.
⚠Brand says nothing about PFAS
Xiaomi
Xihama for Xiaomi Miband 7/6/5/4/3 Replacement Band, Braided Nylon Band, Watch Band, Xiaomi Replacement Strap, Integrate
Braided nylon watch band
Azo dyes in nylon colorants
Braided nylon bands are typically dyed; if low-cost suppliers use non-compliant azo dyes…
Bacterial growth in braided crevices
User reports and general dermatology guidance note that braided or textured watch bands…
Formaldehyde / VOCs
Nylon fabric may be treated with formaldehyde-based resins during manufacturing to…
Microplastic shedding from braided fibers
Friction and washing may cause microscopic fibers to detach from the braided band and…
Lower concern; bare nylon unlikely to contain PFAS, but unverified.
⚠Brand says nothing about PFAS
Xiaomi
Xihama for Xiaomi Miband 7/6/5/4/3 Replacement Band Braided Nylon Band
Braided nylon
Azo dyes and colorfast stability
Braided nylon bands are typically dyed to achieve color. If non-compliant azo dyes were…
Nylon microfiber shedding
Braided nylon can shed microscopic fibers during normal wear and washing, especially if…
Contact dermatitis from dye or finish residue
Individuals with sensitive skin may experience mild irritation from residual dye, mordant…
Lower concern. Nylon band unlikely to contain PFAS unless specially treated.
⚠Brand says nothing about PFAS
Xiaomi
Cover-Discount Xiaomi Smart Band 9 / 8 Nylon Stoff Band flexibel mit Klett
Nylon fabric with hook-and-loop fastener (Velcro)
Antimony in polyester components
Hook-and-loop fastener backing may contain polyester; antimony is a known polyester…
Contact dermatitis from Velcro or adhesives
Synthetic hook fibers and loop backing can irritate sensitive skin with prolonged contact…
Lower concern. Nylon band unlikely to contain PFAS, no treatment signs present.
⚠Brand says nothing about PFAS
Xiaomi
Watch Band Elastic Adjustable Nylon Braided 14mm Bracelet Strap Wristband for Xiaomi Mi Band 3/4/5/6/NFC
nylon braided fabric strap
Azo dyes in nylon fabric
Budget nylon straps typically use cheaper acid or basic dyes that may include azo…
Formaldehyde / VOCs
Plain nylon fabric may be treated with formaldehyde resins for shape retention or water…
Elastic component degradation
Nylon blend typically includes elastic fibers (spandex or polyurethane) to provide…
Lower concern. Basic nylon strap with no special coatings noted.
⚠Brand says nothing about PFAS
Xiaomi
Mi Band 8/8 NFC Quick Release Replacement Band Straps Wristbands Accessories Bracelet Fit
Silicone or TPU elastomer wristband
Skin irritation from additives or accelerators in elastomer curing
Silicone and TPU manufacturing may involve residual sulfur compounds, zinc oxide, or…
Bacterial growth in porous or degraded elastomer surfaces
Worn or cracked bands trap moisture and dead skin cells, creating conditions for…
Lower PFAS concern. Silicone bands rarely contain PFAS, but no transparency.
⚠Brand says nothing about PFAS
Xiaomi
For Xiaomi Mi Band 6 / 5 / 4 / 3 Armor Nylon Strap Watch Band(Colorful)
Nylon textile with colorfast dyes
Azo dyes and colorant leaching
Nylon straps rely on synthetic dyes for color. While 'colorfast' formulations minimize…
Microfiber shedding with wear
Nylon textiles naturally shed microscopic fibers when abraded or degraded. This is not…
Contact dermatitis from dyes or finishes
Individuals with dye sensitivity or skin barrier disorders may experience mild irritation…
Strap degradation and brittleness
Nylon loses elasticity and becomes brittle after 1-2 years of UV exposure or repeated…
Nylon strap, lower PFAS concern.
⚠Brand says nothing about PFAS
Xiaomi
Opaska Do Xiaomi Mi Band 8 9 Pasek Smartband Czarna
silicone or elastomer band
Phthalates
TPU variants may contain phthalate esters for flexibility, but dermal absorption at body…
Bacterial or fungal growth
Elastomer bands are occlusive and retain moisture; poor hygiene can support dermatophyte…
Allergic sensitization to elastomer additives
A small percentage of users may react to antioxidants, accelerators, or peroxide residues…
Silicone smartwatch band, lower PFAS concern but no disclosure.
⚠Brand says nothing about PFAS
Xiaomi
Smart Band 10 Activity Band
Silicone band, metal casing, plastic/elastomer components
Silicone band degradation and bacterial colonization
Silicone itself is chemically inert, but prolonged moisture retention in worn silicone…
Allergenic reactions to silicone or adhesives
Silicone band allergy is rare but documented in some individuals; synthetic rubber or…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Smart Watch Fitness Tracker, 1.47'' TFT Display, 21-Day Battery Life, 50 Fitness Modes, 50m Water Resistant, Smar
Unspecified polymers, likely silicone and stainless steel band; 50m
Water resistance seal failure and bacterial/mold growth
The 50m rating depends on gasket and seal integrity, which can degrade after 1-2 years of…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Redmi Watch 5 Active Smartwatch
Plastic case, glass display, stainless steel band
Plastic degradation and microplastic shedding
Plastic cases can degrade under UV exposure and thermal stress over 2-3 years of use. No…
Battery leakage and electrolyte exposure
All lithium-ion batteries carry a small risk of leakage if damaged or exposed to extreme…
Adhesive outgassing or skin contact irritation
Adhesives used to bond the case and band together may release volatile organic compounds…
Nickel or cobalt allergy from stainless steel band
Stainless steel bands can contain trace nickel (typically under 0.5%), which may trigger…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Smart Band 10 Pro Activity Band
Silicone band, AMOLED display, aluminum frame, stainless steel caseback
Heavy metals
Silicone can be formulated with various dyes and surface treatments. Without published…
Stainless steel caseback nickel content
Stainless steel alloys can contain nickel (1-8% typical). Individuals with nickel…
PFAS
The band is marketed as water-resistant; such durability typically relies on…
Activity band with water resistance; PFAS disclosure absent, limited public material details.
⚠Brand says nothing about PFAS
Xiaomi
Smart Band 8
Silicone band, stainless steel case, AMOLED display
Nickel leaching from stainless steel case
Stainless steel alloys typically contain 8-12% nickel. While corrosion-resistant in…
Microplastics
Extended UV exposure or repeated mechanical stress can cause surface cracking in…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Smart Band 9 Active Smartwatch
Plastic band, metal casing
Plastic band degradation and skin contact
Silicone and TPU bands are inherently low-hazard, but prolonged UV exposure or contact…
Metal casing corrosion and nickel release
Aluminum or stainless steel casings are generally corrosion-resistant, but cheap alloys…
Seal degradation and bacterial growth
IP68 seals rely on gaskets and mechanical closure, not chemical coatings. If seals fail…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Watch S5 Smartwatch
Stainless steel case, plastic composite band
Plastic band degradation and skin contact
The composite plastic band may crack or peel with age, especially under UV exposure or…
Bacterial colonization in band crevices
Smartwatch bands trap moisture and sweat in seams and around sensors. This creates a…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Redmi Watch 5 Active Midnight Silver - 18-Day Battery Life, 2-Inch Display, 140+ Workout Modes, 5atm Waterproof, Bluetoo
Unspecified watch body, 5ATM
Elastomer seal degradation (waterproof integrity loss)
5ATM seals rely on rubber or silicone gaskets that degrade with heat, salt water, and UV…
Nickel leaching from metal casing or fasteners
If the watch body or band includes stainless steel or plated fasteners, prolonged skin…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Smart Band 9
Silicone band with stainless steel case
Nickel leaching from stainless steel case
Stainless steel can release trace nickel through skin contact, especially if the grade is…
Bacterial or fungal growth in band crevices
Silicone bands trap sweat and bacteria in the clasp and underside if not cleaned…
Skin irritation from band material or adhesives
Some wearers report contact dermatitis or hyperhidrosis exacerbation from continuous…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Redmi Watch 6 Smartwatch
Stainless steel case, glass/polymer display
Nickel leaching from stainless steel
Stainless steel watch cases can release trace nickel under acidic skin conditions or…
Wrist band material degradation
Silicone or synthetic rubber bands may contain proprietary antimicrobial or…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Redmi Watch 5 Lite Smartwatch - 1.96 inch Amoled, 18-Day Battery, 5atm Waterproof, Alexa, Bluetooth Calling, Black, Adul
Stainless steel case, AMOLED display, elastomer strap
Elastomer strap degradation and skin irritation
Elastomer straps can degrade over 1-2 years with sweat and UV exposure, potentially…
Bacterial or fungal growth under band
Trapped moisture under the elastomer strap can promote microbial growth if not cleaned…
Stainless steel nickel release
Some stainless steel alloys contain nickel, which can cause contact dermatitis in…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Smartwatch Ip68 Waterproof Bluetooth Call Electrocardiogram Bp
Unspecified polymers, electronics
Polymer degradation and microcracking
Unspecified polymers in wearables can degrade under UV light and repeated flex over 2-3…
Battery leakage (internal)
Lithium-ion batteries in sealed wearables carry a very small risk of internal leakage if…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi
Smart Band 9 Pro Smartwatch
Aluminum alloy case, elastomer strap
Elastomer strap degradation and skin contact
Elastomer straps naturally degrade over 1, 3 years with sweat, UV, and heat exposure.…
Aluminum alloy corrosion in saltwater or high-chlorine environments
Although the device is rated IP68 waterproof, prolonged exposure to saltwater, pool…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Xiaomi and PFAS, common questions
- Does Xiaomi have PFAS?
- We graded 21 Xiaomi products, averaging Excellent (85/100). 21 grade Good or better. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Xiaomi non-toxic?
- Slim Woven Metal Watch Band for Xiaomi Xiaomi Watch is the highest-graded Xiaomi product we have scored, at 85/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Xiaomi products are lower concern for PFAS?
- The highest-graded Xiaomi products we have scored are Slim Woven Metal Watch Band for Xiaomi Xiaomi Watch, Xihama for Xiaomi Miband 7/6/5/4/3 Replacement Band, Braided Nylon Band, Watch Band, Xiaomi Replacement Strap, Integrate, Xihama for Xiaomi Miband 7/6/5/4/3 Replacement Band Braided Nylon Band. That is our model-based estimate from materials and public disclosure, not a lab test.
Every grade uses the same public rubric. How grades work →